Carbon monoxide-releasing molecules (CO-RMs) are chemical compounds that release controlled amounts of
carbon monoxide (CO) to cells and tissues and are being developed as potential therapeutic agents. Although long recognized as a poison, CO also exhibits beneficial effects in small doses. These effects include
anti-inflammatory activity, vasodilatation, and cardioprotection. CO is produced in mammals during the degradation of heme by
heme oxygenase-1, a redox-sensitive enzyme induced by
oxidative stress. It is this enzymatic reaction that inspired the development of synthetic CO-RMs.